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Finding the Fourth Proportional to 487,048.80, 730,688.40 and 154,624.80

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Solution

The fourth proportional to 487,048.80, 730,688.40 and 154,624.80 is: 231,973.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,048.80 : 730,688.40 = 154,624.80 : x
  2. Step 2: Convert to fraction form
    487,048.80/730,688.40 = 154,624.80/x
  3. Step 3: Cross multiply
    487,048.80x = 730,688.40 × 154,624.80
  4. Step 4: Simplify right side
    487,048.80x = 112,982,547,712.32
  5. Step 5: Solve for x
    x = 112,982,547,712.32/487,048.80
  6. Step 6: Final answer
    x = 231,973.77

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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.