Home / 315,615,359.12-435,562,646.76-176,386,116.78

Finding the Fourth Proportional to 315,615,359.12, 435,562,646.76 and 176,386,116.78

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Solution

The fourth proportional to 315,615,359.12, 435,562,646.76 and 176,386,116.78 is: 243,420,358.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,615,359.12 : 435,562,646.76 = 176,386,116.78 : x
  2. Step 2: Convert to fraction form
    315,615,359.12/435,562,646.76 = 176,386,116.78/x
  3. Step 3: Cross multiply
    315,615,359.12x = 435,562,646.76 × 176,386,116.78
  4. Step 4: Simplify right side
    315,615,359.12x = 76,827,203,876,415,248
  5. Step 5: Solve for x
    x = 76,827,203,876,415,248/315,615,359.12
  6. Step 6: Final answer
    x = 243,420,358.54

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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.