Home / 398,835,007.20-550,484,143.20-233,875,720.80

Finding the Fourth Proportional to 398,835,007.20, 550,484,143.20 and 233,875,720.80

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Solution

The fourth proportional to 398,835,007.20, 550,484,143.20 and 233,875,720.80 is: 322,802,345.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,835,007.20 : 550,484,143.20 = 233,875,720.80 : x
  2. Step 2: Convert to fraction form
    398,835,007.20/550,484,143.20 = 233,875,720.80/x
  3. Step 3: Cross multiply
    398,835,007.20x = 550,484,143.20 × 233,875,720.80
  4. Step 4: Simplify right side
    398,835,007.20x = 128,744,875,779,870,432
  5. Step 5: Solve for x
    x = 128,744,875,779,870,432/398,835,007.20
  6. Step 6: Final answer
    x = 322,802,345.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.