Home / 315,615,386.92-435,562,685.24-176,386,144.72

Finding the Fourth Proportional to 315,615,386.92, 435,562,685.24 and 176,386,144.72

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Solution

The fourth proportional to 315,615,386.92, 435,562,685.24 and 176,386,144.72 is: 243,420,397.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,615,386.92 : 435,562,685.24 = 176,386,144.72 : x
  2. Step 2: Convert to fraction form
    315,615,386.92/435,562,685.24 = 176,386,144.72/x
  3. Step 3: Cross multiply
    315,615,386.92x = 435,562,685.24 × 176,386,144.72
  4. Step 4: Simplify right side
    315,615,386.92x = 76,827,222,833,374,448
  5. Step 5: Solve for x
    x = 76,827,222,833,374,448/315,615,386.92
  6. Step 6: Final answer
    x = 243,420,397.16

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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.