Home / 315,386,021.80-435,228,078.18-176,158,815.40

Finding the Fourth Proportional to 315,386,021.80, 435,228,078.18 and 176,158,815.40

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Solution

The fourth proportional to 315,386,021.80, 435,228,078.18 and 176,158,815.40 is: 243,096,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,386,021.80 : 435,228,078.18 = 176,158,815.40 : x
  2. Step 2: Convert to fraction form
    315,386,021.80/435,228,078.18 = 176,158,815.40/x
  3. Step 3: Cross multiply
    315,386,021.80x = 435,228,078.18 × 176,158,815.40
  4. Step 4: Simplify right side
    315,386,021.80x = 76,669,262,681,007,392
  5. Step 5: Solve for x
    x = 76,669,262,681,007,392/315,386,021.80
  6. Step 6: Final answer
    x = 243,096,578.10

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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.