Home / 418,172.13-577,079.79-257,132.40

Finding the Fourth Proportional to 418,172.13, 577,079.79 and 257,132.40

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Solution

The fourth proportional to 418,172.13, 577,079.79 and 257,132.40 is: 354,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,172.13 : 577,079.79 = 257,132.40 : x
  2. Step 2: Convert to fraction form
    418,172.13/577,079.79 = 257,132.40/x
  3. Step 3: Cross multiply
    418,172.13x = 577,079.79 × 257,132.40
  4. Step 4: Simplify right side
    418,172.13x = 148,385,911,394.20
  5. Step 5: Solve for x
    x = 148,385,911,394.20/418,172.13
  6. Step 6: Final answer
    x = 354,844.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.