Home / 282,741.52-390,075.10-209,328.80

Finding the Fourth Proportional to 282,741.52, 390,075.10 and 209,328.80

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Solution

The fourth proportional to 282,741.52, 390,075.10 and 209,328.80 is: 288,793.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,741.52 : 390,075.10 = 209,328.80 : x
  2. Step 2: Convert to fraction form
    282,741.52/390,075.10 = 209,328.80/x
  3. Step 3: Cross multiply
    282,741.52x = 390,075.10 × 209,328.80
  4. Step 4: Simplify right side
    282,741.52x = 81,653,952,592.88
  5. Step 5: Solve for x
    x = 81,653,952,592.88/282,741.52
  6. Step 6: Final answer
    x = 288,793.64

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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.