Home / 305,041,605-421,160,117.40-234,351,315.78

Finding the Fourth Proportional to 305,041,605, 421,160,117.40 and 234,351,315.78

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Solution

The fourth proportional to 305,041,605, 421,160,117.40 and 234,351,315.78 is: 323,560,544.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,041,605 : 421,160,117.40 = 234,351,315.78 : x
  2. Step 2: Convert to fraction form
    305,041,605/421,160,117.40 = 234,351,315.78/x
  3. Step 3: Cross multiply
    305,041,605x = 421,160,117.40 × 234,351,315.78
  4. Step 4: Simplify right side
    305,041,605x = 98,699,427,666,749,264
  5. Step 5: Solve for x
    x = 98,699,427,666,749,264/305,041,605
  6. Step 6: Final answer
    x = 323,560,544.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.