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Finding the Fourth Proportional to 315,624.10, 473,032.95 and 128,424.10

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Solution

The fourth proportional to 315,624.10, 473,032.95 and 128,424.10 is: 192,472.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,624.10 : 473,032.95 = 128,424.10 : x
  2. Step 2: Convert to fraction form
    315,624.10/473,032.95 = 128,424.10/x
  3. Step 3: Cross multiply
    315,624.10x = 473,032.95 × 128,424.10
  4. Step 4: Simplify right side
    315,624.10x = 60,748,830,874.10
  5. Step 5: Solve for x
    x = 60,748,830,874.10/315,624.10
  6. Step 6: Final answer
    x = 192,472.09

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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.