Home / 358,913.60-537,722.40-209,031.20

Finding the Fourth Proportional to 358,913.60, 537,722.40 and 209,031.20

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Solution

The fourth proportional to 358,913.60, 537,722.40 and 209,031.20 is: 313,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,913.60 : 537,722.40 = 209,031.20 : x
  2. Step 2: Convert to fraction form
    358,913.60/537,722.40 = 209,031.20/x
  3. Step 3: Cross multiply
    358,913.60x = 537,722.40 × 209,031.20
  4. Step 4: Simplify right side
    358,913.60x = 112,400,758,538.88
  5. Step 5: Solve for x
    x = 112,400,758,538.88/358,913.60
  6. Step 6: Final answer
    x = 313,169.40

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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.