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Finding the Fourth Proportional to 207,231,718.80, 290,549,079.60 and 207,231,718.80

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Solution

The fourth proportional to 207,231,718.80, 290,549,079.60 and 207,231,718.80 is: 290,549,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,231,718.80 : 290,549,079.60 = 207,231,718.80 : x
  2. Step 2: Convert to fraction form
    207,231,718.80/290,549,079.60 = 207,231,718.80/x
  3. Step 3: Cross multiply
    207,231,718.80x = 290,549,079.60 × 207,231,718.80
  4. Step 4: Simplify right side
    207,231,718.80x = 60,210,985,161,266,024
  5. Step 5: Solve for x
    x = 60,210,985,161,266,024/207,231,718.80
  6. Step 6: Final answer
    x = 290,549,079.60

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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.