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Finding the Fourth Proportional to 207,477.80, 310,499.90 and 124,431.40

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Solution

The fourth proportional to 207,477.80, 310,499.90 and 124,431.40 is: 186,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,477.80 : 310,499.90 = 124,431.40 : x
  2. Step 2: Convert to fraction form
    207,477.80/310,499.90 = 124,431.40/x
  3. Step 3: Cross multiply
    207,477.80x = 310,499.90 × 124,431.40
  4. Step 4: Simplify right side
    207,477.80x = 38,635,937,256.86
  5. Step 5: Solve for x
    x = 38,635,937,256.86/207,477.80
  6. Step 6: Final answer
    x = 186,217.21

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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.