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Finding the Fourth Proportional to 218,726.40, 307,046.40 and 218,726.40

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Solution

The fourth proportional to 218,726.40, 307,046.40 and 218,726.40 is: 307,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,726.40 : 307,046.40 = 218,726.40 : x
  2. Step 2: Convert to fraction form
    218,726.40/307,046.40 = 218,726.40/x
  3. Step 3: Cross multiply
    218,726.40x = 307,046.40 × 218,726.40
  4. Step 4: Simplify right side
    218,726.40x = 67,159,153,704.96
  5. Step 5: Solve for x
    x = 67,159,153,704.96/218,726.40
  6. Step 6: Final answer
    x = 307,046.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.