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Finding the Fourth Proportional to 306,083.20, 459,124.80 and 260,812.30

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Solution

The fourth proportional to 306,083.20, 459,124.80 and 260,812.30 is: 391,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,083.20 : 459,124.80 = 260,812.30 : x
  2. Step 2: Convert to fraction form
    306,083.20/459,124.80 = 260,812.30/x
  3. Step 3: Cross multiply
    306,083.20x = 459,124.80 × 260,812.30
  4. Step 4: Simplify right side
    306,083.20x = 119,745,395,075.04
  5. Step 5: Solve for x
    x = 119,745,395,075.04/306,083.20
  6. Step 6: Final answer
    x = 391,218.45

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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.