Home / 287,330,770.72-396,516,448.41-155,171,754.50

Finding the Fourth Proportional to 287,330,770.72, 396,516,448.41 and 155,171,754.50

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Solution

The fourth proportional to 287,330,770.72, 396,516,448.41 and 155,171,754.50 is: 214,137,013.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,330,770.72 : 396,516,448.41 = 155,171,754.50 : x
  2. Step 2: Convert to fraction form
    287,330,770.72/396,516,448.41 = 155,171,754.50/x
  3. Step 3: Cross multiply
    287,330,770.72x = 396,516,448.41 × 155,171,754.50
  4. Step 4: Simplify right side
    287,330,770.72x = 61,528,152,987,888,440
  5. Step 5: Solve for x
    x = 61,528,152,987,888,440/287,330,770.72
  6. Step 6: Final answer
    x = 214,137,013.01

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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.