Home / 217,011,337.20-325,517,005.80-80,668,508.40

Finding the Fourth Proportional to 217,011,337.20, 325,517,005.80 and 80,668,508.40

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Solution

The fourth proportional to 217,011,337.20, 325,517,005.80 and 80,668,508.40 is: 121,002,762.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,011,337.20 : 325,517,005.80 = 80,668,508.40 : x
  2. Step 2: Convert to fraction form
    217,011,337.20/325,517,005.80 = 80,668,508.40/x
  3. Step 3: Cross multiply
    217,011,337.20x = 325,517,005.80 × 80,668,508.40
  4. Step 4: Simplify right side
    217,011,337.20x = 26,258,971,316,720,152
  5. Step 5: Solve for x
    x = 26,258,971,316,720,152/217,011,337.20
  6. Step 6: Final answer
    x = 121,002,762.60

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1.5x scale

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.