Home / 217,618,666.40-326,427,999.60-72,074,691.20

Finding the Fourth Proportional to 217,618,666.40, 326,427,999.60 and 72,074,691.20

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Solution

The fourth proportional to 217,618,666.40, 326,427,999.60 and 72,074,691.20 is: 108,112,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,618,666.40 : 326,427,999.60 = 72,074,691.20 : x
  2. Step 2: Convert to fraction form
    217,618,666.40/326,427,999.60 = 72,074,691.20/x
  3. Step 3: Cross multiply
    217,618,666.40x = 326,427,999.60 × 72,074,691.20
  4. Step 4: Simplify right side
    217,618,666.40x = 23,527,197,270,203,728
  5. Step 5: Solve for x
    x = 23,527,197,270,203,728/217,618,666.40
  6. Step 6: Final answer
    x = 108,112,036.80

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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.