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Finding the Fourth Proportional to 171,041,780.80, 256,264,072.80 and 147,153,908.80

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Solution

The fourth proportional to 171,041,780.80, 256,264,072.80 and 147,153,908.80 is: 220,473,967.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,041,780.80 : 256,264,072.80 = 147,153,908.80 : x
  2. Step 2: Convert to fraction form
    171,041,780.80/256,264,072.80 = 147,153,908.80/x
  3. Step 3: Cross multiply
    171,041,780.80x = 256,264,072.80 × 147,153,908.80
  4. Step 4: Simplify right side
    171,041,780.80x = 37,710,259,997,527,768
  5. Step 5: Solve for x
    x = 37,710,259,997,527,768/171,041,780.80
  6. Step 6: Final answer
    x = 220,473,967.36

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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.