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Finding the Fourth Proportional to 305,547, 458,332.92 and 145,540.68

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Solution

The fourth proportional to 305,547, 458,332.92 and 145,540.68 is: 218,316.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,547 : 458,332.92 = 145,540.68 : x
  2. Step 2: Convert to fraction form
    305,547/458,332.92 = 145,540.68/x
  3. Step 3: Cross multiply
    305,547x = 458,332.92 × 145,540.68
  4. Step 4: Simplify right side
    305,547x = 66,706,084,843.19
  5. Step 5: Solve for x
    x = 66,706,084,843.19/305,547
  6. Step 6: Final answer
    x = 218,316.94

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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.