Home / 389,316.30-584,083.80-189,643.20

Finding the Fourth Proportional to 389,316.30, 584,083.80 and 189,643.20

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Solution

The fourth proportional to 389,316.30, 584,083.80 and 189,643.20 is: 284,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,316.30 : 584,083.80 = 189,643.20 : x
  2. Step 2: Convert to fraction form
    389,316.30/584,083.80 = 189,643.20/x
  3. Step 3: Cross multiply
    389,316.30x = 584,083.80 × 189,643.20
  4. Step 4: Simplify right side
    389,316.30x = 110,767,520,900.16
  5. Step 5: Solve for x
    x = 110,767,520,900.16/389,316.30
  6. Step 6: Final answer
    x = 284,518.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.