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Finding the Fourth Proportional to 153,607.80, 215,673 and 153,607.80

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Solution

The fourth proportional to 153,607.80, 215,673 and 153,607.80 is: 215,673

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,607.80 : 215,673 = 153,607.80 : x
  2. Step 2: Convert to fraction form
    153,607.80/215,673 = 153,607.80/x
  3. Step 3: Cross multiply
    153,607.80x = 215,673 × 153,607.80
  4. Step 4: Simplify right side
    153,607.80x = 33,129,055,049.40
  5. Step 5: Solve for x
    x = 33,129,055,049.40/153,607.80
  6. Step 6: Final answer
    x = 215,673

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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.