Home / 459,705.20-688,080.36-245,939.72

Finding the Fourth Proportional to 459,705.20, 688,080.36 and 245,939.72

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Solution

The fourth proportional to 459,705.20, 688,080.36 and 245,939.72 is: 368,119.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,705.20 : 688,080.36 = 245,939.72 : x
  2. Step 2: Convert to fraction form
    459,705.20/688,080.36 = 245,939.72/x
  3. Step 3: Cross multiply
    459,705.20x = 688,080.36 × 245,939.72
  4. Step 4: Simplify right side
    459,705.20x = 169,226,291,075.90
  5. Step 5: Solve for x
    x = 169,226,291,075.90/459,705.20
  6. Step 6: Final answer
    x = 368,119.16

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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.