Home / 287,997.85-397,586.45-210,386.35

Finding the Fourth Proportional to 287,997.85, 397,586.45 and 210,386.35

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Solution

The fourth proportional to 287,997.85, 397,586.45 and 210,386.35 is: 290,442.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,997.85 : 397,586.45 = 210,386.35 : x
  2. Step 2: Convert to fraction form
    287,997.85/397,586.45 = 210,386.35/x
  3. Step 3: Cross multiply
    287,997.85x = 397,586.45 × 210,386.35
  4. Step 4: Simplify right side
    287,997.85x = 83,646,762,024.96
  5. Step 5: Solve for x
    x = 83,646,762,024.96/287,997.85
  6. Step 6: Final answer
    x = 290,442.31

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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.