Home / 385,403,313.60-577,913,680.80-139,750,142.40

Finding the Fourth Proportional to 385,403,313.60, 577,913,680.80 and 139,750,142.40

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Solution

The fourth proportional to 385,403,313.60, 577,913,680.80 and 139,750,142.40 is: 209,555,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,403,313.60 : 577,913,680.80 = 139,750,142.40 : x
  2. Step 2: Convert to fraction form
    385,403,313.60/577,913,680.80 = 139,750,142.40/x
  3. Step 3: Cross multiply
    385,403,313.60x = 577,913,680.80 × 139,750,142.40
  4. Step 4: Simplify right side
    385,403,313.60x = 80,763,519,186,708,144
  5. Step 5: Solve for x
    x = 80,763,519,186,708,144/385,403,313.60
  6. Step 6: Final answer
    x = 209,555,850.55

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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.