Home / 287,998.35-397,587.14-210,386.85

Finding the Fourth Proportional to 287,998.35, 397,587.14 and 210,386.85

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Solution

The fourth proportional to 287,998.35, 397,587.14 and 210,386.85 is: 290,443.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,998.35 : 397,587.14 = 210,386.85 : x
  2. Step 2: Convert to fraction form
    287,998.35/397,587.14 = 210,386.85/x
  3. Step 3: Cross multiply
    287,998.35x = 397,587.14 × 210,386.85
  4. Step 4: Simplify right side
    287,998.35x = 83,647,104,933.17
  5. Step 5: Solve for x
    x = 83,647,104,933.17/287,998.35
  6. Step 6: Final answer
    x = 290,443.00

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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.