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Finding the Fourth Proportional to 493,399.60, 740,123.70 and 257,203.60

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Solution

The fourth proportional to 493,399.60, 740,123.70 and 257,203.60 is: 385,818.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,399.60 : 740,123.70 = 257,203.60 : x
  2. Step 2: Convert to fraction form
    493,399.60/740,123.70 = 257,203.60/x
  3. Step 3: Cross multiply
    493,399.60x = 740,123.70 × 257,203.60
  4. Step 4: Simplify right side
    493,399.60x = 190,362,480,085.32
  5. Step 5: Solve for x
    x = 190,362,480,085.32/493,399.60
  6. Step 6: Final answer
    x = 385,818.07

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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.