Home / 287,738.62-397,070.73-158,677.07

Finding the Fourth Proportional to 287,738.62, 397,070.73 and 158,677.07

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Solution

The fourth proportional to 287,738.62, 397,070.73 and 158,677.07 is: 218,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,738.62 : 397,070.73 = 158,677.07 : x
  2. Step 2: Convert to fraction form
    287,738.62/397,070.73 = 158,677.07/x
  3. Step 3: Cross multiply
    287,738.62x = 397,070.73 × 158,677.07
  4. Step 4: Simplify right side
    287,738.62x = 63,006,018,033.81
  5. Step 5: Solve for x
    x = 63,006,018,033.81/287,738.62
  6. Step 6: Final answer
    x = 218,969.63

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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.