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Finding the Fourth Proportional to 356,663.61, 534,996.36 and 90,424.26

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Solution

The fourth proportional to 356,663.61, 534,996.36 and 90,424.26 is: 135,636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,663.61 : 534,996.36 = 90,424.26 : x
  2. Step 2: Convert to fraction form
    356,663.61/534,996.36 = 90,424.26/x
  3. Step 3: Cross multiply
    356,663.61x = 534,996.36 × 90,424.26
  4. Step 4: Simplify right side
    356,663.61x = 48,376,649,955.69
  5. Step 5: Solve for x
    x = 48,376,649,955.69/356,663.61
  6. Step 6: Final answer
    x = 135,636.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.