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Finding the Fourth Proportional to 356,818.76, 535,277.10 and 207,129.32

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Solution

The fourth proportional to 356,818.76, 535,277.10 and 207,129.32 is: 310,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,818.76 : 535,277.10 = 207,129.32 : x
  2. Step 2: Convert to fraction form
    356,818.76/535,277.10 = 207,129.32/x
  3. Step 3: Cross multiply
    356,818.76x = 535,277.10 × 207,129.32
  4. Step 4: Simplify right side
    356,818.76x = 110,871,581,734.57
  5. Step 5: Solve for x
    x = 110,871,581,734.57/356,818.76
  6. Step 6: Final answer
    x = 310,722.40

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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.