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Finding the Fourth Proportional to 390,709.08, 586,152 and 124,484.76

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Solution

The fourth proportional to 390,709.08, 586,152 and 124,484.76 is: 186,755.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,709.08 : 586,152 = 124,484.76 : x
  2. Step 2: Convert to fraction form
    390,709.08/586,152 = 124,484.76/x
  3. Step 3: Cross multiply
    390,709.08x = 586,152 × 124,484.76
  4. Step 4: Simplify right side
    390,709.08x = 72,966,991,043.52
  5. Step 5: Solve for x
    x = 72,966,991,043.52/390,709.08
  6. Step 6: Final answer
    x = 186,755.30

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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.