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Finding the Fourth Proportional to 314,897.20, 434,555.32 and 171,657.20

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Solution

The fourth proportional to 314,897.20, 434,555.32 and 171,657.20 is: 236,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,897.20 : 434,555.32 = 171,657.20 : x
  2. Step 2: Convert to fraction form
    314,897.20/434,555.32 = 171,657.20/x
  3. Step 3: Cross multiply
    314,897.20x = 434,555.32 × 171,657.20
  4. Step 4: Simplify right side
    314,897.20x = 74,594,549,476.30
  5. Step 5: Solve for x
    x = 74,594,549,476.30/314,897.20
  6. Step 6: Final answer
    x = 236,885.40

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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.