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Finding the Fourth Proportional to 317,073.40, 437,329.47 and 202,430.86

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Solution

The fourth proportional to 317,073.40, 437,329.47 and 202,430.86 is: 279,206.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,073.40 : 437,329.47 = 202,430.86 : x
  2. Step 2: Convert to fraction form
    317,073.40/437,329.47 = 202,430.86/x
  3. Step 3: Cross multiply
    317,073.40x = 437,329.47 × 202,430.86
  4. Step 4: Simplify right side
    317,073.40x = 88,528,980,715.44
  5. Step 5: Solve for x
    x = 88,528,980,715.44/317,073.40
  6. Step 6: Final answer
    x = 279,206.58

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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.