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Finding the Fourth Proportional to 262,461.60, 393,730.80 and 84,938.40

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Solution

The fourth proportional to 262,461.60, 393,730.80 and 84,938.40 is: 127,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,461.60 : 393,730.80 = 84,938.40 : x
  2. Step 2: Convert to fraction form
    262,461.60/393,730.80 = 84,938.40/x
  3. Step 3: Cross multiply
    262,461.60x = 393,730.80 × 84,938.40
  4. Step 4: Simplify right side
    262,461.60x = 33,442,864,182.72
  5. Step 5: Solve for x
    x = 33,442,864,182.72/262,461.60
  6. Step 6: Final answer
    x = 127,420.03

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1.5x scale

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.