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Finding the Fourth Proportional to 370,421.20, 517,967.60 and 370,421.20

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Solution

The fourth proportional to 370,421.20, 517,967.60 and 370,421.20 is: 517,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,421.20 : 517,967.60 = 370,421.20 : x
  2. Step 2: Convert to fraction form
    370,421.20/517,967.60 = 370,421.20/x
  3. Step 3: Cross multiply
    370,421.20x = 517,967.60 × 370,421.20
  4. Step 4: Simplify right side
    370,421.20x = 191,866,179,953.12
  5. Step 5: Solve for x
    x = 191,866,179,953.12/370,421.20
  6. Step 6: Final answer
    x = 517,967.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.