Home / 418,929.60-627,703.20-208,113.60

Finding the Fourth Proportional to 418,929.60, 627,703.20 and 208,113.60

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Solution

The fourth proportional to 418,929.60, 627,703.20 and 208,113.60 is: 311,827.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,929.60 : 627,703.20 = 208,113.60 : x
  2. Step 2: Convert to fraction form
    418,929.60/627,703.20 = 208,113.60/x
  3. Step 3: Cross multiply
    418,929.60x = 627,703.20 × 208,113.60
  4. Step 4: Simplify right side
    418,929.60x = 130,633,572,683.52
  5. Step 5: Solve for x
    x = 130,633,572,683.52/418,929.60
  6. Step 6: Final answer
    x = 311,827.03

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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.