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Finding the Fourth Proportional to 404,690.80, 607,036.20 and 155,378.80

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Solution

The fourth proportional to 404,690.80, 607,036.20 and 155,378.80 is: 233,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,690.80 : 607,036.20 = 155,378.80 : x
  2. Step 2: Convert to fraction form
    404,690.80/607,036.20 = 155,378.80/x
  3. Step 3: Cross multiply
    404,690.80x = 607,036.20 × 155,378.80
  4. Step 4: Simplify right side
    404,690.80x = 94,320,556,312.56
  5. Step 5: Solve for x
    x = 94,320,556,312.56/404,690.80
  6. Step 6: Final answer
    x = 233,068.20

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Similar ratio
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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.