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Finding the Fourth Proportional to 273,951.05, 378,088.16 and 153,117.47

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Solution

The fourth proportional to 273,951.05, 378,088.16 and 153,117.47 is: 211,322.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,951.05 : 378,088.16 = 153,117.47 : x
  2. Step 2: Convert to fraction form
    273,951.05/378,088.16 = 153,117.47/x
  3. Step 3: Cross multiply
    273,951.05x = 378,088.16 × 153,117.47
  4. Step 4: Simplify right side
    273,951.05x = 57,891,902,675.79
  5. Step 5: Solve for x
    x = 57,891,902,675.79/273,951.05
  6. Step 6: Final answer
    x = 211,322.07

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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.