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Finding the Fourth Proportional to 402,868.81, 604,316.72 and 122,385.25

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Solution

The fourth proportional to 402,868.81, 604,316.72 and 122,385.25 is: 183,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,868.81 : 604,316.72 = 122,385.25 : x
  2. Step 2: Convert to fraction form
    402,868.81/604,316.72 = 122,385.25/x
  3. Step 3: Cross multiply
    402,868.81x = 604,316.72 × 122,385.25
  4. Step 4: Simplify right side
    402,868.81x = 73,959,452,856.38
  5. Step 5: Solve for x
    x = 73,959,452,856.38/402,868.81
  6. Step 6: Final answer
    x = 183,581.98

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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.