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Finding the Fourth Proportional to 261,377.36, 392,117.06 and 83,870.72

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Solution

The fourth proportional to 261,377.36, 392,117.06 and 83,870.72 is: 125,822.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,377.36 : 392,117.06 = 83,870.72 : x
  2. Step 2: Convert to fraction form
    261,377.36/392,117.06 = 83,870.72/x
  3. Step 3: Cross multiply
    261,377.36x = 392,117.06 × 83,870.72
  4. Step 4: Simplify right side
    261,377.36x = 32,887,138,395.57
  5. Step 5: Solve for x
    x = 32,887,138,395.57/261,377.36
  6. Step 6: Final answer
    x = 125,822.45

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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.