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Finding the Fourth Proportional to 402,975.60, 604,290.60 and 203,218.80

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Solution

The fourth proportional to 402,975.60, 604,290.60 and 203,218.80 is: 304,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,975.60 : 604,290.60 = 203,218.80 : x
  2. Step 2: Convert to fraction form
    402,975.60/604,290.60 = 203,218.80/x
  3. Step 3: Cross multiply
    402,975.60x = 604,290.60 × 203,218.80
  4. Step 4: Simplify right side
    402,975.60x = 122,803,210,583.28
  5. Step 5: Solve for x
    x = 122,803,210,583.28/402,975.60
  6. Step 6: Final answer
    x = 304,741.06

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1.5x scale

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.