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Finding the Fourth Proportional to 425,140.16, 636,211.87 and 265,291.35

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Solution

The fourth proportional to 425,140.16, 636,211.87 and 265,291.35 is: 397,002.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,140.16 : 636,211.87 = 265,291.35 : x
  2. Step 2: Convert to fraction form
    425,140.16/636,211.87 = 265,291.35/x
  3. Step 3: Cross multiply
    425,140.16x = 636,211.87 × 265,291.35
  4. Step 4: Simplify right side
    425,140.16x = 168,781,502,829.30
  5. Step 5: Solve for x
    x = 168,781,502,829.30/425,140.16
  6. Step 6: Final answer
    x = 397,002.03

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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.