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Finding the Fourth Proportional to 261,886.86, 392,852.94 and 72,347.17

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Solution

The fourth proportional to 261,886.86, 392,852.94 and 72,347.17 is: 108,527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,886.86 : 392,852.94 = 72,347.17 : x
  2. Step 2: Convert to fraction form
    261,886.86/392,852.94 = 72,347.17/x
  3. Step 3: Cross multiply
    261,886.86x = 392,852.94 × 72,347.17
  4. Step 4: Simplify right side
    261,886.86x = 28,421,798,435.18
  5. Step 5: Solve for x
    x = 28,421,798,435.18/261,886.86
  6. Step 6: Final answer
    x = 108,527.01

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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.