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Finding the Fourth Proportional to 404,808.20, 607,212.30 and 142,152.20

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Solution

The fourth proportional to 404,808.20, 607,212.30 and 142,152.20 is: 213,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,808.20 : 607,212.30 = 142,152.20 : x
  2. Step 2: Convert to fraction form
    404,808.20/607,212.30 = 142,152.20/x
  3. Step 3: Cross multiply
    404,808.20x = 607,212.30 × 142,152.20
  4. Step 4: Simplify right side
    404,808.20x = 86,316,564,312.06
  5. Step 5: Solve for x
    x = 86,316,564,312.06/404,808.20
  6. Step 6: Final answer
    x = 213,228.30

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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.