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Finding the Fourth Proportional to 401,316, 553,816.08 and 231,550.13

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Solution

The fourth proportional to 401,316, 553,816.08 and 231,550.13 is: 319,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,316 : 553,816.08 = 231,550.13 : x
  2. Step 2: Convert to fraction form
    401,316/553,816.08 = 231,550.13/x
  3. Step 3: Cross multiply
    401,316x = 553,816.08 × 231,550.13
  4. Step 4: Simplify right side
    401,316x = 128,236,182,551.01
  5. Step 5: Solve for x
    x = 128,236,182,551.01/401,316
  6. Step 6: Final answer
    x = 319,539.17

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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.