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Finding the Fourth Proportional to 418,507.76, 577,547.28 and 227,521.88

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Solution

The fourth proportional to 418,507.76, 577,547.28 and 227,521.88 is: 313,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,507.76 : 577,547.28 = 227,521.88 : x
  2. Step 2: Convert to fraction form
    418,507.76/577,547.28 = 227,521.88/x
  3. Step 3: Cross multiply
    418,507.76x = 577,547.28 × 227,521.88
  4. Step 4: Simplify right side
    418,507.76x = 131,404,642,934.49
  5. Step 5: Solve for x
    x = 131,404,642,934.49/418,507.76
  6. Step 6: Final answer
    x = 313,983.77

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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.