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Finding the Fourth Proportional to 499,472,348.40, 749,208,522.60 and 212,220,687.60

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Solution

The fourth proportional to 499,472,348.40, 749,208,522.60 and 212,220,687.60 is: 318,331,031.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,472,348.40 : 749,208,522.60 = 212,220,687.60 : x
  2. Step 2: Convert to fraction form
    499,472,348.40/749,208,522.60 = 212,220,687.60/x
  3. Step 3: Cross multiply
    499,472,348.40x = 749,208,522.60 × 212,220,687.60
  4. Step 4: Simplify right side
    499,472,348.40x = 158,997,547,821,952,128
  5. Step 5: Solve for x
    x = 158,997,547,821,952,128/499,472,348.40
  6. Step 6: Final answer
    x = 318,331,031.40

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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.