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Finding the Fourth Proportional to 405,888.48, 560,088 and 274,799.52

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Solution

The fourth proportional to 405,888.48, 560,088 and 274,799.52 is: 379,197.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,888.48 : 560,088 = 274,799.52 : x
  2. Step 2: Convert to fraction form
    405,888.48/560,088 = 274,799.52/x
  3. Step 3: Cross multiply
    405,888.48x = 560,088 × 274,799.52
  4. Step 4: Simplify right side
    405,888.48x = 153,911,913,557.76
  5. Step 5: Solve for x
    x = 153,911,913,557.76/405,888.48
  6. Step 6: Final answer
    x = 379,197.54

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1.5x scale

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.