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Finding the Fourth Proportional to 260,032.30, 390,048.45 and 220,666.30

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Solution

The fourth proportional to 260,032.30, 390,048.45 and 220,666.30 is: 330,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,032.30 : 390,048.45 = 220,666.30 : x
  2. Step 2: Convert to fraction form
    260,032.30/390,048.45 = 220,666.30/x
  3. Step 3: Cross multiply
    260,032.30x = 390,048.45 × 220,666.30
  4. Step 4: Simplify right side
    260,032.30x = 86,070,548,282.24
  5. Step 5: Solve for x
    x = 86,070,548,282.24/260,032.30
  6. Step 6: Final answer
    x = 330,999.45

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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.