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Finding the Fourth Proportional to 356,486.40, 534,729.60 and 286,502.40

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Solution

The fourth proportional to 356,486.40, 534,729.60 and 286,502.40 is: 429,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,486.40 : 534,729.60 = 286,502.40 : x
  2. Step 2: Convert to fraction form
    356,486.40/534,729.60 = 286,502.40/x
  3. Step 3: Cross multiply
    356,486.40x = 534,729.60 × 286,502.40
  4. Step 4: Simplify right side
    356,486.40x = 153,201,313,751.04
  5. Step 5: Solve for x
    x = 153,201,313,751.04/356,486.40
  6. Step 6: Final answer
    x = 429,753.60

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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.