Home / 282,779.10-390,232.42-210,505.20

Finding the Fourth Proportional to 282,779.10, 390,232.42 and 210,505.20

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Solution

The fourth proportional to 282,779.10, 390,232.42 and 210,505.20 is: 290,495.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,779.10 : 390,232.42 = 210,505.20 : x
  2. Step 2: Convert to fraction form
    282,779.10/390,232.42 = 210,505.20/x
  3. Step 3: Cross multiply
    282,779.10x = 390,232.42 × 210,505.20
  4. Step 4: Simplify right side
    282,779.10x = 82,145,951,628.95
  5. Step 5: Solve for x
    x = 82,145,951,628.95/282,779.10
  6. Step 6: Final answer
    x = 290,495.13

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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.