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Finding the Fourth Proportional to 459,994.40, 688,564.56 and 249,109.28

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Solution

The fourth proportional to 459,994.40, 688,564.56 and 249,109.28 is: 372,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,994.40 : 688,564.56 = 249,109.28 : x
  2. Step 2: Convert to fraction form
    459,994.40/688,564.56 = 249,109.28/x
  3. Step 3: Cross multiply
    459,994.40x = 688,564.56 × 249,109.28
  4. Step 4: Simplify right side
    459,994.40x = 171,527,821,775.12
  5. Step 5: Solve for x
    x = 171,527,821,775.12/459,994.40
  6. Step 6: Final answer
    x = 372,891.11

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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.