Home / 425,738,530.20-638,607,795.30-243,836,117.40

Finding the Fourth Proportional to 425,738,530.20, 638,607,795.30 and 243,836,117.40

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Solution

The fourth proportional to 425,738,530.20, 638,607,795.30 and 243,836,117.40 is: 365,754,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,738,530.20 : 638,607,795.30 = 243,836,117.40 : x
  2. Step 2: Convert to fraction form
    425,738,530.20/638,607,795.30 = 243,836,117.40/x
  3. Step 3: Cross multiply
    425,738,530.20x = 638,607,795.30 × 243,836,117.40
  4. Step 4: Simplify right side
    425,738,530.20x = 155,715,645,347,325,952
  5. Step 5: Solve for x
    x = 155,715,645,347,325,952/425,738,530.20
  6. Step 6: Final answer
    x = 365,754,176.10

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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.