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Finding the Fourth Proportional to 307,683.50, 424,617.81 and 173,547.50

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Solution

The fourth proportional to 307,683.50, 424,617.81 and 173,547.50 is: 239,503.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,683.50 : 424,617.81 = 173,547.50 : x
  2. Step 2: Convert to fraction form
    307,683.50/424,617.81 = 173,547.50/x
  3. Step 3: Cross multiply
    307,683.50x = 424,617.81 × 173,547.50
  4. Step 4: Simplify right side
    307,683.50x = 73,691,359,380.98
  5. Step 5: Solve for x
    x = 73,691,359,380.98/307,683.50
  6. Step 6: Final answer
    x = 239,503.77

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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.