Home / 390,080.04-584,641.26-221,741.34

Finding the Fourth Proportional to 390,080.04, 584,641.26 and 221,741.34

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Solution

The fourth proportional to 390,080.04, 584,641.26 and 221,741.34 is: 332,339.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,080.04 : 584,641.26 = 221,741.34 : x
  2. Step 2: Convert to fraction form
    390,080.04/584,641.26 = 221,741.34/x
  3. Step 3: Cross multiply
    390,080.04x = 584,641.26 × 221,741.34
  4. Step 4: Simplify right side
    390,080.04x = 129,639,136,411.69
  5. Step 5: Solve for x
    x = 129,639,136,411.69/390,080.04
  6. Step 6: Final answer
    x = 332,339.84

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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.