Home / 287,330,774.38-396,516,453.47-155,171,758.17

Finding the Fourth Proportional to 287,330,774.38, 396,516,453.47 and 155,171,758.17

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Solution

The fourth proportional to 287,330,774.38, 396,516,453.47 and 155,171,758.17 is: 214,137,018.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,330,774.38 : 396,516,453.47 = 155,171,758.17 : x
  2. Step 2: Convert to fraction form
    287,330,774.38/396,516,453.47 = 155,171,758.17/x
  3. Step 3: Cross multiply
    287,330,774.38x = 396,516,453.47 × 155,171,758.17
  4. Step 4: Simplify right side
    287,330,774.38x = 61,528,155,229,565,872
  5. Step 5: Solve for x
    x = 61,528,155,229,565,872/287,330,774.38
  6. Step 6: Final answer
    x = 214,137,018.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.