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Finding the Fourth Proportional to 348,745.32, 478,124.01 and 342,446.76

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Solution

The fourth proportional to 348,745.32, 478,124.01 and 342,446.76 is: 469,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,745.32 : 478,124.01 = 342,446.76 : x
  2. Step 2: Convert to fraction form
    348,745.32/478,124.01 = 342,446.76/x
  3. Step 3: Cross multiply
    348,745.32x = 478,124.01 × 342,446.76
  4. Step 4: Simplify right side
    348,745.32x = 163,732,018,102.71
  5. Step 5: Solve for x
    x = 163,732,018,102.71/348,745.32
  6. Step 6: Final answer
    x = 469,488.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.