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Finding the Fourth Proportional to 260,046.90, 390,070.35 and 171,473.40

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Solution

The fourth proportional to 260,046.90, 390,070.35 and 171,473.40 is: 257,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,046.90 : 390,070.35 = 171,473.40 : x
  2. Step 2: Convert to fraction form
    260,046.90/390,070.35 = 171,473.40/x
  3. Step 3: Cross multiply
    260,046.90x = 390,070.35 × 171,473.40
  4. Step 4: Simplify right side
    260,046.90x = 66,886,689,153.69
  5. Step 5: Solve for x
    x = 66,886,689,153.69/260,046.90
  6. Step 6: Final answer
    x = 257,210.10

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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.