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Finding the Fourth Proportional to 207,447.80, 310,454.90 and 124,401.40

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Solution

The fourth proportional to 207,447.80, 310,454.90 and 124,401.40 is: 186,172.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,447.80 : 310,454.90 = 124,401.40 : x
  2. Step 2: Convert to fraction form
    207,447.80/310,454.90 = 124,401.40/x
  3. Step 3: Cross multiply
    207,447.80x = 310,454.90 × 124,401.40
  4. Step 4: Simplify right side
    207,447.80x = 38,621,024,196.86
  5. Step 5: Solve for x
    x = 38,621,024,196.86/207,447.80
  6. Step 6: Final answer
    x = 186,172.25

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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.