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Finding the Fourth Proportional to 307,435.56, 424,188.84 and 186,574.16

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Solution

The fourth proportional to 307,435.56, 424,188.84 and 186,574.16 is: 257,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,435.56 : 424,188.84 = 186,574.16 : x
  2. Step 2: Convert to fraction form
    307,435.56/424,188.84 = 186,574.16/x
  3. Step 3: Cross multiply
    307,435.56x = 424,188.84 × 186,574.16
  4. Step 4: Simplify right side
    307,435.56x = 79,142,676,504.37
  5. Step 5: Solve for x
    x = 79,142,676,504.37/307,435.56
  6. Step 6: Final answer
    x = 257,428.50

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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.