Home / 287,996.85-397,585.07-210,385.35

Finding the Fourth Proportional to 287,996.85, 397,585.07 and 210,385.35

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Solution

The fourth proportional to 287,996.85, 397,585.07 and 210,385.35 is: 290,440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,996.85 : 397,585.07 = 210,385.35 : x
  2. Step 2: Convert to fraction form
    287,996.85/397,585.07 = 210,385.35/x
  3. Step 3: Cross multiply
    287,996.85x = 397,585.07 × 210,385.35
  4. Step 4: Simplify right side
    287,996.85x = 83,646,073,811.14
  5. Step 5: Solve for x
    x = 83,646,073,811.14/287,996.85
  6. Step 6: Final answer
    x = 290,440.93

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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.