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Finding the Fourth Proportional to 402,504.87, 555,445.02 and 230,417.03

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Solution

The fourth proportional to 402,504.87, 555,445.02 and 230,417.03 is: 317,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,504.87 : 555,445.02 = 230,417.03 : x
  2. Step 2: Convert to fraction form
    402,504.87/555,445.02 = 230,417.03/x
  3. Step 3: Cross multiply
    402,504.87x = 555,445.02 × 230,417.03
  4. Step 4: Simplify right side
    402,504.87x = 127,983,991,260.65
  5. Step 5: Solve for x
    x = 127,983,991,260.65/402,504.87
  6. Step 6: Final answer
    x = 317,968.80

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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.