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Finding the Fourth Proportional to 342,390.04, 472,512.36 and 189,425.80

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Solution

The fourth proportional to 342,390.04, 472,512.36 and 189,425.80 is: 261,415.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,390.04 : 472,512.36 = 189,425.80 : x
  2. Step 2: Convert to fraction form
    342,390.04/472,512.36 = 189,425.80/x
  3. Step 3: Cross multiply
    342,390.04x = 472,512.36 × 189,425.80
  4. Step 4: Simplify right side
    342,390.04x = 89,506,031,802.89
  5. Step 5: Solve for x
    x = 89,506,031,802.89/342,390.04
  6. Step 6: Final answer
    x = 261,415.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.