Home / 385,400,401.60-577,909,312.80-139,747,230.40

Finding the Fourth Proportional to 385,400,401.60, 577,909,312.80 and 139,747,230.40

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Solution

The fourth proportional to 385,400,401.60, 577,909,312.80 and 139,747,230.40 is: 209,551,483.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,400,401.60 : 577,909,312.80 = 139,747,230.40 : x
  2. Step 2: Convert to fraction form
    385,400,401.60/577,909,312.80 = 139,747,230.40/x
  3. Step 3: Cross multiply
    385,400,401.60x = 577,909,312.80 × 139,747,230.40
  4. Step 4: Simplify right side
    385,400,401.60x = 80,761,225,886,167,264
  5. Step 5: Solve for x
    x = 80,761,225,886,167,264/385,400,401.60
  6. Step 6: Final answer
    x = 209,551,483.47

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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.