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Finding the Fourth Proportional to 346,707.60, 520,061.40 and 303,853.20

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Solution

The fourth proportional to 346,707.60, 520,061.40 and 303,853.20 is: 455,779.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,707.60 : 520,061.40 = 303,853.20 : x
  2. Step 2: Convert to fraction form
    346,707.60/520,061.40 = 303,853.20/x
  3. Step 3: Cross multiply
    346,707.60x = 520,061.40 × 303,853.20
  4. Step 4: Simplify right side
    346,707.60x = 158,022,320,586.48
  5. Step 5: Solve for x
    x = 158,022,320,586.48/346,707.60
  6. Step 6: Final answer
    x = 455,779.80

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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.