Home / 315,531.79-435,435.47-172,291.83

Finding the Fourth Proportional to 315,531.79, 435,435.47 and 172,291.83

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Solution

The fourth proportional to 315,531.79, 435,435.47 and 172,291.83 is: 237,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,531.79 : 435,435.47 = 172,291.83 : x
  2. Step 2: Convert to fraction form
    315,531.79/435,435.47 = 172,291.83/x
  3. Step 3: Cross multiply
    315,531.79x = 435,435.47 × 172,291.83
  4. Step 4: Simplify right side
    315,531.79x = 75,021,973,973.21
  5. Step 5: Solve for x
    x = 75,021,973,973.21/315,531.79
  6. Step 6: Final answer
    x = 237,763.60

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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.