Home / 289,028.34-432,981.45-212,988.85

Finding the Fourth Proportional to 289,028.34, 432,981.45 and 212,988.85

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Solution

The fourth proportional to 289,028.34, 432,981.45 and 212,988.85 is: 319,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,028.34 : 432,981.45 = 212,988.85 : x
  2. Step 2: Convert to fraction form
    289,028.34/432,981.45 = 212,988.85/x
  3. Step 3: Cross multiply
    289,028.34x = 432,981.45 × 212,988.85
  4. Step 4: Simplify right side
    289,028.34x = 92,220,219,225.67
  5. Step 5: Solve for x
    x = 92,220,219,225.67/289,028.34
  6. Step 6: Final answer
    x = 319,069.82

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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.