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Finding the Fourth Proportional to 317,275.79, 476,038.31 and 139,658.27

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Solution

The fourth proportional to 317,275.79, 476,038.31 and 139,658.27 is: 209,542.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,275.79 : 476,038.31 = 139,658.27 : x
  2. Step 2: Convert to fraction form
    317,275.79/476,038.31 = 139,658.27/x
  3. Step 3: Cross multiply
    317,275.79x = 476,038.31 × 139,658.27
  4. Step 4: Simplify right side
    317,275.79x = 66,482,683,749.84
  5. Step 5: Solve for x
    x = 66,482,683,749.84/317,275.79
  6. Step 6: Final answer
    x = 209,542.26

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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.