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Finding the Fourth Proportional to 317,776.62, 478,382.92 and 289,495.34

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Solution

The fourth proportional to 317,776.62, 478,382.92 and 289,495.34 is: 435,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,776.62 : 478,382.92 = 289,495.34 : x
  2. Step 2: Convert to fraction form
    317,776.62/478,382.92 = 289,495.34/x
  3. Step 3: Cross multiply
    317,776.62x = 478,382.92 × 289,495.34
  4. Step 4: Simplify right side
    317,776.62x = 138,489,626,075.59
  5. Step 5: Solve for x
    x = 138,489,626,075.59/317,776.62
  6. Step 6: Final answer
    x = 435,808.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.