Home / 346,985.40-520,478.10-214,015.80

Finding the Fourth Proportional to 346,985.40, 520,478.10 and 214,015.80

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Solution

The fourth proportional to 346,985.40, 520,478.10 and 214,015.80 is: 321,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,985.40 : 520,478.10 = 214,015.80 : x
  2. Step 2: Convert to fraction form
    346,985.40/520,478.10 = 214,015.80/x
  3. Step 3: Cross multiply
    346,985.40x = 520,478.10 × 214,015.80
  4. Step 4: Simplify right side
    346,985.40x = 111,390,536,953.98
  5. Step 5: Solve for x
    x = 111,390,536,953.98/346,985.40
  6. Step 6: Final answer
    x = 321,023.70

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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.