Home / 402,120.15-602,261.28-191,905.71

Finding the Fourth Proportional to 402,120.15, 602,261.28 and 191,905.71

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Solution

The fourth proportional to 402,120.15, 602,261.28 and 191,905.71 is: 287,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,120.15 : 602,261.28 = 191,905.71 : x
  2. Step 2: Convert to fraction form
    402,120.15/602,261.28 = 191,905.71/x
  3. Step 3: Cross multiply
    402,120.15x = 602,261.28 × 191,905.71
  4. Step 4: Simplify right side
    402,120.15x = 115,577,378,543.91
  5. Step 5: Solve for x
    x = 115,577,378,543.91/402,120.15
  6. Step 6: Final answer
    x = 287,420.01

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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.