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Finding the Fourth Proportional to 304,720.48, 420,515.43 and 168,751.45

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Solution

The fourth proportional to 304,720.48, 420,515.43 and 168,751.45 is: 232,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,720.48 : 420,515.43 = 168,751.45 : x
  2. Step 2: Convert to fraction form
    304,720.48/420,515.43 = 168,751.45/x
  3. Step 3: Cross multiply
    304,720.48x = 420,515.43 × 168,751.45
  4. Step 4: Simplify right side
    304,720.48x = 70,962,586,457.30
  5. Step 5: Solve for x
    x = 70,962,586,457.30/304,720.48
  6. Step 6: Final answer
    x = 232,877.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.