Home / 287,641,349.17-396,944,890.57-155,482,347.45

Finding the Fourth Proportional to 287,641,349.17, 396,944,890.57 and 155,482,347.45

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Solution

The fourth proportional to 287,641,349.17, 396,944,890.57 and 155,482,347.45 is: 214,565,546.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,641,349.17 : 396,944,890.57 = 155,482,347.45 : x
  2. Step 2: Convert to fraction form
    287,641,349.17/396,944,890.57 = 155,482,347.45/x
  3. Step 3: Cross multiply
    287,641,349.17x = 396,944,890.57 × 155,482,347.45
  4. Step 4: Simplify right side
    287,641,349.17x = 61,717,923,394,106,960
  5. Step 5: Solve for x
    x = 61,717,923,394,106,960/287,641,349.17
  6. Step 6: Final answer
    x = 214,565,546.89

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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.