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Finding the Fourth Proportional to 261,574.52, 392,534.10 and 143,328.89

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Solution

The fourth proportional to 261,574.52, 392,534.10 and 143,328.89 is: 215,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,574.52 : 392,534.10 = 143,328.89 : x
  2. Step 2: Convert to fraction form
    261,574.52/392,534.10 = 143,328.89/x
  3. Step 3: Cross multiply
    261,574.52x = 392,534.10 × 143,328.89
  4. Step 4: Simplify right side
    261,574.52x = 56,261,477,821.48
  5. Step 5: Solve for x
    x = 56,261,477,821.48/261,574.52
  6. Step 6: Final answer
    x = 215,087.77

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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.