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Finding the Fourth Proportional to 360,014.10, 540,021.15 and 260,870.10

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Solution

The fourth proportional to 360,014.10, 540,021.15 and 260,870.10 is: 391,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,014.10 : 540,021.15 = 260,870.10 : x
  2. Step 2: Convert to fraction form
    360,014.10/540,021.15 = 260,870.10/x
  3. Step 3: Cross multiply
    360,014.10x = 540,021.15 × 260,870.10
  4. Step 4: Simplify right side
    360,014.10x = 140,875,371,402.62
  5. Step 5: Solve for x
    x = 140,875,371,402.62/360,014.10
  6. Step 6: Final answer
    x = 391,305.15

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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.