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Finding the Fourth Proportional to 246,476.80, 369,569.40 and 128,378.80

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Solution

The fourth proportional to 246,476.80, 369,569.40 and 128,378.80 is: 192,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,476.80 : 369,569.40 = 128,378.80 : x
  2. Step 2: Convert to fraction form
    246,476.80/369,569.40 = 128,378.80/x
  3. Step 3: Cross multiply
    246,476.80x = 369,569.40 × 128,378.80
  4. Step 4: Simplify right side
    246,476.80x = 47,444,876,088.72
  5. Step 5: Solve for x
    x = 47,444,876,088.72/246,476.80
  6. Step 6: Final answer
    x = 192,492.26

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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.