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Finding the Fourth Proportional to 314,406.82, 433,990.74 and 187,079.68

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Solution

The fourth proportional to 314,406.82, 433,990.74 and 187,079.68 is: 258,235.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,406.82 : 433,990.74 = 187,079.68 : x
  2. Step 2: Convert to fraction form
    314,406.82/433,990.74 = 187,079.68/x
  3. Step 3: Cross multiply
    314,406.82x = 433,990.74 × 187,079.68
  4. Step 4: Simplify right side
    314,406.82x = 81,190,848,762.16
  5. Step 5: Solve for x
    x = 81,190,848,762.16/314,406.82
  6. Step 6: Final answer
    x = 258,235.01

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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.