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Finding the Fourth Proportional to 145,752,679.80, 218,629,019.70 and 38,047,303.80

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Solution

The fourth proportional to 145,752,679.80, 218,629,019.70 and 38,047,303.80 is: 57,070,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,752,679.80 : 218,629,019.70 = 38,047,303.80 : x
  2. Step 2: Convert to fraction form
    145,752,679.80/218,629,019.70 = 38,047,303.80/x
  3. Step 3: Cross multiply
    145,752,679.80x = 218,629,019.70 × 38,047,303.80
  4. Step 4: Simplify right side
    145,752,679.80x = 8,318,244,732,022,084
  5. Step 5: Solve for x
    x = 8,318,244,732,022,084/145,752,679.80
  6. Step 6: Final answer
    x = 57,070,955.70

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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.