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Finding the Fourth Proportional to 421,602.70, 632,185.35 and 155,226.10

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Solution

The fourth proportional to 421,602.70, 632,185.35 and 155,226.10 is: 232,758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,602.70 : 632,185.35 = 155,226.10 : x
  2. Step 2: Convert to fraction form
    421,602.70/632,185.35 = 155,226.10/x
  3. Step 3: Cross multiply
    421,602.70x = 632,185.35 × 155,226.10
  4. Step 4: Simplify right side
    421,602.70x = 98,131,666,357.64
  5. Step 5: Solve for x
    x = 98,131,666,357.64/421,602.70
  6. Step 6: Final answer
    x = 232,758.63

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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.