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Finding the Fourth Proportional to 375,419.07, 563,123.79 and 91,111.95

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Solution

The fourth proportional to 375,419.07, 563,123.79 and 91,111.95 is: 136,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,419.07 : 563,123.79 = 91,111.95 : x
  2. Step 2: Convert to fraction form
    375,419.07/563,123.79 = 91,111.95/x
  3. Step 3: Cross multiply
    375,419.07x = 563,123.79 × 91,111.95
  4. Step 4: Simplify right side
    375,419.07x = 51,307,306,598.29
  5. Step 5: Solve for x
    x = 51,307,306,598.29/375,419.07
  6. Step 6: Final answer
    x = 136,666.76

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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.