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Finding the Fourth Proportional to 435,087.60, 652,631.40 and 257,503.20

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Solution

The fourth proportional to 435,087.60, 652,631.40 and 257,503.20 is: 386,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,087.60 : 652,631.40 = 257,503.20 : x
  2. Step 2: Convert to fraction form
    435,087.60/652,631.40 = 257,503.20/x
  3. Step 3: Cross multiply
    435,087.60x = 652,631.40 × 257,503.20
  4. Step 4: Simplify right side
    435,087.60x = 168,054,673,920.48
  5. Step 5: Solve for x
    x = 168,054,673,920.48/435,087.60
  6. Step 6: Final answer
    x = 386,254.80

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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.