Home / 315,154.74-434,916.66-171,917.76

Finding the Fourth Proportional to 315,154.74, 434,916.66 and 171,917.76

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Solution

The fourth proportional to 315,154.74, 434,916.66 and 171,917.76 is: 237,248.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,154.74 : 434,916.66 = 171,917.76 : x
  2. Step 2: Convert to fraction form
    315,154.74/434,916.66 = 171,917.76/x
  3. Step 3: Cross multiply
    315,154.74x = 434,916.66 × 171,917.76
  4. Step 4: Simplify right side
    315,154.74x = 74,769,897,973.88
  5. Step 5: Solve for x
    x = 74,769,897,973.88/315,154.74
  6. Step 6: Final answer
    x = 237,248.21

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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.