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Finding the Fourth Proportional to 611,913.60, 917,514 and 237,499.20

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Solution

The fourth proportional to 611,913.60, 917,514 and 237,499.20 is: 356,110.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,913.60 : 917,514 = 237,499.20 : x
  2. Step 2: Convert to fraction form
    611,913.60/917,514 = 237,499.20/x
  3. Step 3: Cross multiply
    611,913.60x = 917,514 × 237,499.20
  4. Step 4: Simplify right side
    611,913.60x = 217,908,840,988.80
  5. Step 5: Solve for x
    x = 217,908,840,988.80/611,913.60
  6. Step 6: Final answer
    x = 356,110.47

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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.