Home / 260,009.10-390,013.65-181,212.30

Finding the Fourth Proportional to 260,009.10, 390,013.65 and 181,212.30

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Solution

The fourth proportional to 260,009.10, 390,013.65 and 181,212.30 is: 271,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,009.10 : 390,013.65 = 181,212.30 : x
  2. Step 2: Convert to fraction form
    260,009.10/390,013.65 = 181,212.30/x
  3. Step 3: Cross multiply
    260,009.10x = 390,013.65 × 181,212.30
  4. Step 4: Simplify right side
    260,009.10x = 70,675,270,547.90
  5. Step 5: Solve for x
    x = 70,675,270,547.90/260,009.10
  6. Step 6: Final answer
    x = 271,818.45

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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.