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Finding the Fourth Proportional to 356,345.40, 534,518.10 and 303,857.40

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Solution

The fourth proportional to 356,345.40, 534,518.10 and 303,857.40 is: 455,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,345.40 : 534,518.10 = 303,857.40 : x
  2. Step 2: Convert to fraction form
    356,345.40/534,518.10 = 303,857.40/x
  3. Step 3: Cross multiply
    356,345.40x = 534,518.10 × 303,857.40
  4. Step 4: Simplify right side
    356,345.40x = 162,417,280,118.94
  5. Step 5: Solve for x
    x = 162,417,280,118.94/356,345.40
  6. Step 6: Final answer
    x = 455,786.10

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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.