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Finding the Fourth Proportional to 453,945.40, 680,918.10 and 154,763.80

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Solution

The fourth proportional to 453,945.40, 680,918.10 and 154,763.80 is: 232,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,945.40 : 680,918.10 = 154,763.80 : x
  2. Step 2: Convert to fraction form
    453,945.40/680,918.10 = 154,763.80/x
  3. Step 3: Cross multiply
    453,945.40x = 680,918.10 × 154,763.80
  4. Step 4: Simplify right side
    453,945.40x = 105,381,472,644.78
  5. Step 5: Solve for x
    x = 105,381,472,644.78/453,945.40
  6. Step 6: Final answer
    x = 232,145.70

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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.