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Finding the Fourth Proportional to 315,182.72, 434,892.66 and 187,870.16

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Solution

The fourth proportional to 315,182.72, 434,892.66 and 187,870.16 is: 259,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,182.72 : 434,892.66 = 187,870.16 : x
  2. Step 2: Convert to fraction form
    315,182.72/434,892.66 = 187,870.16/x
  3. Step 3: Cross multiply
    315,182.72x = 434,892.66 × 187,870.16
  4. Step 4: Simplify right side
    315,182.72x = 81,703,353,617.03
  5. Step 5: Solve for x
    x = 81,703,353,617.03/315,182.72
  6. Step 6: Final answer
    x = 259,225.36

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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.