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Finding the Fourth Proportional to 438,421.06, 604,956.16 and 266,249.28

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Solution

The fourth proportional to 438,421.06, 604,956.16 and 266,249.28 is: 367,384.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,421.06 : 604,956.16 = 266,249.28 : x
  2. Step 2: Convert to fraction form
    438,421.06/604,956.16 = 266,249.28/x
  3. Step 3: Cross multiply
    438,421.06x = 604,956.16 × 266,249.28
  4. Step 4: Simplify right side
    438,421.06x = 161,069,142,031.57
  5. Step 5: Solve for x
    x = 161,069,142,031.57/438,421.06
  6. Step 6: Final answer
    x = 367,384.59

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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.