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Finding the Fourth Proportional to 373,248,603.20, 559,872,904.80 and 257,989,620.80

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Solution

The fourth proportional to 373,248,603.20, 559,872,904.80 and 257,989,620.80 is: 386,984,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,248,603.20 : 559,872,904.80 = 257,989,620.80 : x
  2. Step 2: Convert to fraction form
    373,248,603.20/559,872,904.80 = 257,989,620.80/x
  3. Step 3: Cross multiply
    373,248,603.20x = 559,872,904.80 × 257,989,620.80
  4. Step 4: Simplify right side
    373,248,603.20x = 144,441,398,405,546,496
  5. Step 5: Solve for x
    x = 144,441,398,405,546,496/373,248,603.20
  6. Step 6: Final answer
    x = 386,984,431.20

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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.