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Finding the Fourth Proportional to 293,407.40, 440,111.10 and 143,743.70

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Solution

The fourth proportional to 293,407.40, 440,111.10 and 143,743.70 is: 215,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,407.40 : 440,111.10 = 143,743.70 : x
  2. Step 2: Convert to fraction form
    293,407.40/440,111.10 = 143,743.70/x
  3. Step 3: Cross multiply
    293,407.40x = 440,111.10 × 143,743.70
  4. Step 4: Simplify right side
    293,407.40x = 63,263,197,925.07
  5. Step 5: Solve for x
    x = 63,263,197,925.07/293,407.40
  6. Step 6: Final answer
    x = 215,615.55

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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.