Home / 418,904.34-578,070.72-227,918.49

Finding the Fourth Proportional to 418,904.34, 578,070.72 and 227,918.49

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Solution

The fourth proportional to 418,904.34, 578,070.72 and 227,918.49 is: 314,518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,904.34 : 578,070.72 = 227,918.49 : x
  2. Step 2: Convert to fraction form
    418,904.34/578,070.72 = 227,918.49/x
  3. Step 3: Cross multiply
    418,904.34x = 578,070.72 × 227,918.49
  4. Step 4: Simplify right side
    418,904.34x = 131,753,005,615.61
  5. Step 5: Solve for x
    x = 131,753,005,615.61/418,904.34
  6. Step 6: Final answer
    x = 314,518.12

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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.