Home / 346,538.20-519,807.30-212,985.40

Finding the Fourth Proportional to 346,538.20, 519,807.30 and 212,985.40

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Solution

The fourth proportional to 346,538.20, 519,807.30 and 212,985.40 is: 319,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,538.20 : 519,807.30 = 212,985.40 : x
  2. Step 2: Convert to fraction form
    346,538.20/519,807.30 = 212,985.40/x
  3. Step 3: Cross multiply
    346,538.20x = 519,807.30 × 212,985.40
  4. Step 4: Simplify right side
    346,538.20x = 110,711,365,713.42
  5. Step 5: Solve for x
    x = 110,711,365,713.42/346,538.20
  6. Step 6: Final answer
    x = 319,478.10

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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.