Home / 287,425,319.60-431,137,979.40-82,960,065.20

Finding the Fourth Proportional to 287,425,319.60, 431,137,979.40 and 82,960,065.20

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Solution

The fourth proportional to 287,425,319.60, 431,137,979.40 and 82,960,065.20 is: 124,440,097.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,425,319.60 : 431,137,979.40 = 82,960,065.20 : x
  2. Step 2: Convert to fraction form
    287,425,319.60/431,137,979.40 = 82,960,065.20/x
  3. Step 3: Cross multiply
    287,425,319.60x = 431,137,979.40 × 82,960,065.20
  4. Step 4: Simplify right side
    287,425,319.60x = 35,767,234,881,220,256
  5. Step 5: Solve for x
    x = 35,767,234,881,220,256/287,425,319.60
  6. Step 6: Final answer
    x = 124,440,097.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.