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Finding the Fourth Proportional to 315,980.16, 473,656.32 and 129,125.76

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Solution

The fourth proportional to 315,980.16, 473,656.32 and 129,125.76 is: 193,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,980.16 : 473,656.32 = 129,125.76 : x
  2. Step 2: Convert to fraction form
    315,980.16/473,656.32 = 129,125.76/x
  3. Step 3: Cross multiply
    315,980.16x = 473,656.32 × 129,125.76
  4. Step 4: Simplify right side
    315,980.16x = 61,161,232,298.80
  5. Step 5: Solve for x
    x = 61,161,232,298.80/315,980.16
  6. Step 6: Final answer
    x = 193,560.36

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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.