Home / 745,394.40-1,118,101.32-212,932.80

Finding the Fourth Proportional to 745,394.40, 1,118,101.32 and 212,932.80

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Solution

The fourth proportional to 745,394.40, 1,118,101.32 and 212,932.80 is: 319,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,394.40 : 1,118,101.32 = 212,932.80 : x
  2. Step 2: Convert to fraction form
    745,394.40/1,118,101.32 = 212,932.80/x
  3. Step 3: Cross multiply
    745,394.40x = 1,118,101.32 × 212,932.80
  4. Step 4: Simplify right side
    745,394.40x = 238,080,444,751.30
  5. Step 5: Solve for x
    x = 238,080,444,751.30/745,394.40
  6. Step 6: Final answer
    x = 319,401.98

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1.5x scale

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.