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Finding the Fourth Proportional to 459,133.60, 688,700.40 and 309,834.40

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Solution

The fourth proportional to 459,133.60, 688,700.40 and 309,834.40 is: 464,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,133.60 : 688,700.40 = 309,834.40 : x
  2. Step 2: Convert to fraction form
    459,133.60/688,700.40 = 309,834.40/x
  3. Step 3: Cross multiply
    459,133.60x = 688,700.40 × 309,834.40
  4. Step 4: Simplify right side
    459,133.60x = 213,383,075,213.76
  5. Step 5: Solve for x
    x = 213,383,075,213.76/459,133.60
  6. Step 6: Final answer
    x = 464,751.60

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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.