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Finding the Fourth Proportional to 310,320.60, 465,437.70 and 99,979.80

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Solution

The fourth proportional to 310,320.60, 465,437.70 and 99,979.80 is: 149,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,320.60 : 465,437.70 = 99,979.80 : x
  2. Step 2: Convert to fraction form
    310,320.60/465,437.70 = 99,979.80/x
  3. Step 3: Cross multiply
    310,320.60x = 465,437.70 × 99,979.80
  4. Step 4: Simplify right side
    310,320.60x = 46,534,368,158.46
  5. Step 5: Solve for x
    x = 46,534,368,158.46/310,320.60
  6. Step 6: Final answer
    x = 149,955.78

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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.