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Finding the Fourth Proportional to 246,215.80, 369,323.70 and 128,117.80

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Solution

The fourth proportional to 246,215.80, 369,323.70 and 128,117.80 is: 192,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,215.80 : 369,323.70 = 128,117.80 : x
  2. Step 2: Convert to fraction form
    246,215.80/369,323.70 = 128,117.80/x
  3. Step 3: Cross multiply
    246,215.80x = 369,323.70 × 128,117.80
  4. Step 4: Simplify right side
    246,215.80x = 47,316,939,931.86
  5. Step 5: Solve for x
    x = 47,316,939,931.86/246,215.80
  6. Step 6: Final answer
    x = 192,176.70

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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.