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Finding the Fourth Proportional to 370,808.20, 556,212.30 and 256,646.80

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Solution

The fourth proportional to 370,808.20, 556,212.30 and 256,646.80 is: 384,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,808.20 : 556,212.30 = 256,646.80 : x
  2. Step 2: Convert to fraction form
    370,808.20/556,212.30 = 256,646.80/x
  3. Step 3: Cross multiply
    370,808.20x = 556,212.30 × 256,646.80
  4. Step 4: Simplify right side
    370,808.20x = 142,750,106,915.64
  5. Step 5: Solve for x
    x = 142,750,106,915.64/370,808.20
  6. Step 6: Final answer
    x = 384,970.20

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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.