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Finding the Fourth Proportional to 611,731.60, 917,597.40 and 162,521.80

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Solution

The fourth proportional to 611,731.60, 917,597.40 and 162,521.80 is: 243,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,731.60 : 917,597.40 = 162,521.80 : x
  2. Step 2: Convert to fraction form
    611,731.60/917,597.40 = 162,521.80/x
  3. Step 3: Cross multiply
    611,731.60x = 917,597.40 × 162,521.80
  4. Step 4: Simplify right side
    611,731.60x = 149,129,581,123.32
  5. Step 5: Solve for x
    x = 149,129,581,123.32/611,731.60
  6. Step 6: Final answer
    x = 243,782.70

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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.