Home / 385,403,315.60-577,913,683.80-139,750,144.40

Finding the Fourth Proportional to 385,403,315.60, 577,913,683.80 and 139,750,144.40

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Solution

The fourth proportional to 385,403,315.60, 577,913,683.80 and 139,750,144.40 is: 209,555,853.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,403,315.60 : 577,913,683.80 = 139,750,144.40 : x
  2. Step 2: Convert to fraction form
    385,403,315.60/577,913,683.80 = 139,750,144.40/x
  3. Step 3: Cross multiply
    385,403,315.60x = 577,913,683.80 × 139,750,144.40
  4. Step 4: Simplify right side
    385,403,315.60x = 80,763,520,761,785,936
  5. Step 5: Solve for x
    x = 80,763,520,761,785,936/385,403,315.60
  6. Step 6: Final answer
    x = 209,555,853.55

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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.