Home / 400,835.07-553,136.19-239,779.13

Finding the Fourth Proportional to 400,835.07, 553,136.19 and 239,779.13

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Solution

The fourth proportional to 400,835.07, 553,136.19 and 239,779.13 is: 330,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,835.07 : 553,136.19 = 239,779.13 : x
  2. Step 2: Convert to fraction form
    400,835.07/553,136.19 = 239,779.13/x
  3. Step 3: Cross multiply
    400,835.07x = 553,136.19 × 239,779.13
  4. Step 4: Simplify right side
    400,835.07x = 132,630,511,644.03
  5. Step 5: Solve for x
    x = 132,630,511,644.03/400,835.07
  6. Step 6: Final answer
    x = 330,885.50

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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.