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Finding the Fourth Proportional to 324,869.76, 486,547.68 and 315,901.44

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Solution

The fourth proportional to 324,869.76, 486,547.68 and 315,901.44 is: 473,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,869.76 : 486,547.68 = 315,901.44 : x
  2. Step 2: Convert to fraction form
    324,869.76/486,547.68 = 315,901.44/x
  3. Step 3: Cross multiply
    324,869.76x = 486,547.68 × 315,901.44
  4. Step 4: Simplify right side
    324,869.76x = 153,701,112,740.66
  5. Step 5: Solve for x
    x = 153,701,112,740.66/324,869.76
  6. Step 6: Final answer
    x = 473,116.10

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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.