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Finding the Fourth Proportional to 170,987.40, 256,173.90 and 146,411.40

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Solution

The fourth proportional to 170,987.40, 256,173.90 and 146,411.40 is: 219,354.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,987.40 : 256,173.90 = 146,411.40 : x
  2. Step 2: Convert to fraction form
    170,987.40/256,173.90 = 146,411.40/x
  3. Step 3: Cross multiply
    170,987.40x = 256,173.90 × 146,411.40
  4. Step 4: Simplify right side
    170,987.40x = 37,506,779,342.46
  5. Step 5: Solve for x
    x = 37,506,779,342.46/170,987.40
  6. Step 6: Final answer
    x = 219,354.05

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1.5x scale

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.