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Finding the Fourth Proportional to 261,476.64, 392,220.44 and 74,488.16

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Solution

The fourth proportional to 261,476.64, 392,220.44 and 74,488.16 is: 111,733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,476.64 : 392,220.44 = 74,488.16 : x
  2. Step 2: Convert to fraction form
    261,476.64/392,220.44 = 74,488.16/x
  3. Step 3: Cross multiply
    261,476.64x = 392,220.44 × 74,488.16
  4. Step 4: Simplify right side
    261,476.64x = 29,215,778,889.99
  5. Step 5: Solve for x
    x = 29,215,778,889.99/261,476.64
  6. Step 6: Final answer
    x = 111,733.80

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1.5x scale

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.