Home / 262,278.40-393,417.60-157,043.20

Finding the Fourth Proportional to 262,278.40, 393,417.60 and 157,043.20

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Solution

The fourth proportional to 262,278.40, 393,417.60 and 157,043.20 is: 235,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,278.40 : 393,417.60 = 157,043.20 : x
  2. Step 2: Convert to fraction form
    262,278.40/393,417.60 = 157,043.20/x
  3. Step 3: Cross multiply
    262,278.40x = 393,417.60 × 157,043.20
  4. Step 4: Simplify right side
    262,278.40x = 61,783,558,840.32
  5. Step 5: Solve for x
    x = 61,783,558,840.32/262,278.40
  6. Step 6: Final answer
    x = 235,564.80

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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.