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Finding the Fourth Proportional to 386,316.48, 579,362.40 and 149,606.40

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Solution

The fourth proportional to 386,316.48, 579,362.40 and 149,606.40 is: 224,366.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,316.48 : 579,362.40 = 149,606.40 : x
  2. Step 2: Convert to fraction form
    386,316.48/579,362.40 = 149,606.40/x
  3. Step 3: Cross multiply
    386,316.48x = 579,362.40 × 149,606.40
  4. Step 4: Simplify right side
    386,316.48x = 86,676,322,959.36
  5. Step 5: Solve for x
    x = 86,676,322,959.36/386,316.48
  6. Step 6: Final answer
    x = 224,366.10

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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.