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Finding the Fourth Proportional to 438,461.60, 657,643.80 and 122,950.40

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Solution

The fourth proportional to 438,461.60, 657,643.80 and 122,950.40 is: 184,411.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,461.60 : 657,643.80 = 122,950.40 : x
  2. Step 2: Convert to fraction form
    438,461.60/657,643.80 = 122,950.40/x
  3. Step 3: Cross multiply
    438,461.60x = 657,643.80 × 122,950.40
  4. Step 4: Simplify right side
    438,461.60x = 80,857,568,267.52
  5. Step 5: Solve for x
    x = 80,857,568,267.52/438,461.60
  6. Step 6: Final answer
    x = 184,411.97

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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.