Home / 418,890.60-578,071.56-227,905.38

Finding the Fourth Proportional to 418,890.60, 578,071.56 and 227,905.38

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Solution

The fourth proportional to 418,890.60, 578,071.56 and 227,905.38 is: 314,510.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,890.60 : 578,071.56 = 227,905.38 : x
  2. Step 2: Convert to fraction form
    418,890.60/578,071.56 = 227,905.38/x
  3. Step 3: Cross multiply
    418,890.60x = 578,071.56 × 227,905.38
  4. Step 4: Simplify right side
    418,890.60x = 131,745,618,548.99
  5. Step 5: Solve for x
    x = 131,745,618,548.99/418,890.60
  6. Step 6: Final answer
    x = 314,510.80

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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.