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Finding the Fourth Proportional to 355,142.60, 535,111.50 and 293,347.20

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Solution

The fourth proportional to 355,142.60, 535,111.50 and 293,347.20 is: 442,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,142.60 : 535,111.50 = 293,347.20 : x
  2. Step 2: Convert to fraction form
    355,142.60/535,111.50 = 293,347.20/x
  3. Step 3: Cross multiply
    355,142.60x = 535,111.50 × 293,347.20
  4. Step 4: Simplify right side
    355,142.60x = 156,973,460,212.80
  5. Step 5: Solve for x
    x = 156,973,460,212.80/355,142.60
  6. Step 6: Final answer
    x = 442,001.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.