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Finding the Fourth Proportional to 262,038.96, 392,990.40 and 75,006.72

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Solution

The fourth proportional to 262,038.96, 392,990.40 and 75,006.72 is: 112,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,038.96 : 392,990.40 = 75,006.72 : x
  2. Step 2: Convert to fraction form
    262,038.96/392,990.40 = 75,006.72/x
  3. Step 3: Cross multiply
    262,038.96x = 392,990.40 × 75,006.72
  4. Step 4: Simplify right side
    262,038.96x = 29,476,920,895.49
  5. Step 5: Solve for x
    x = 29,476,920,895.49/262,038.96
  6. Step 6: Final answer
    x = 112,490.60

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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.