Home / 745,416.15-1,118,133.95-212,954.55

Finding the Fourth Proportional to 745,416.15, 1,118,133.95 and 212,954.55

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Solution

The fourth proportional to 745,416.15, 1,118,133.95 and 212,954.55 is: 319,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,416.15 : 1,118,133.95 = 212,954.55 : x
  2. Step 2: Convert to fraction form
    745,416.15/1,118,133.95 = 212,954.55/x
  3. Step 3: Cross multiply
    745,416.15x = 1,118,133.95 × 212,954.55
  4. Step 4: Simplify right side
    745,416.15x = 238,111,711,097.20
  5. Step 5: Solve for x
    x = 238,111,711,097.20/745,416.15
  6. Step 6: Final answer
    x = 319,434.60

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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.