Home / 421,036.35-631,554.53-121,526.70

Finding the Fourth Proportional to 421,036.35, 631,554.53 and 121,526.70

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Solution

The fourth proportional to 421,036.35, 631,554.53 and 121,526.70 is: 182,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,036.35 : 631,554.53 = 121,526.70 : x
  2. Step 2: Convert to fraction form
    421,036.35/631,554.53 = 121,526.70/x
  3. Step 3: Cross multiply
    421,036.35x = 631,554.53 × 121,526.70
  4. Step 4: Simplify right side
    421,036.35x = 76,750,737,293.32
  5. Step 5: Solve for x
    x = 76,750,737,293.32/421,036.35
  6. Step 6: Final answer
    x = 182,290.05

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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.