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Finding the Fourth Proportional to 612,397.79, 918,632.43 and 185,947.52

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Solution

The fourth proportional to 612,397.79, 918,632.43 and 185,947.52 is: 278,932.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,397.79 : 918,632.43 = 185,947.52 : x
  2. Step 2: Convert to fraction form
    612,397.79/918,632.43 = 185,947.52/x
  3. Step 3: Cross multiply
    612,397.79x = 918,632.43 × 185,947.52
  4. Step 4: Simplify right side
    612,397.79x = 170,817,421,220.34
  5. Step 5: Solve for x
    x = 170,817,421,220.34/612,397.79
  6. Step 6: Final answer
    x = 278,932.13

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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.