Home / 268,272,938.40-402,409,407.60-186,643,600.80

Finding the Fourth Proportional to 268,272,938.40, 402,409,407.60 and 186,643,600.80

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Solution

The fourth proportional to 268,272,938.40, 402,409,407.60 and 186,643,600.80 is: 279,965,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,272,938.40 : 402,409,407.60 = 186,643,600.80 : x
  2. Step 2: Convert to fraction form
    268,272,938.40/402,409,407.60 = 186,643,600.80/x
  3. Step 3: Cross multiply
    268,272,938.40x = 402,409,407.60 × 186,643,600.80
  4. Step 4: Simplify right side
    268,272,938.40x = 75,107,140,830,258,896
  5. Step 5: Solve for x
    x = 75,107,140,830,258,896/268,272,938.40
  6. Step 6: Final answer
    x = 279,965,401.20

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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.