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Finding the Fourth Proportional to 356,486.90, 534,730.35 and 286,502.90

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Solution

The fourth proportional to 356,486.90, 534,730.35 and 286,502.90 is: 429,754.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,486.90 : 534,730.35 = 286,502.90 : x
  2. Step 2: Convert to fraction form
    356,486.90/534,730.35 = 286,502.90/x
  3. Step 3: Cross multiply
    356,486.90x = 534,730.35 × 286,502.90
  4. Step 4: Simplify right side
    356,486.90x = 153,201,795,993.02
  5. Step 5: Solve for x
    x = 153,201,795,993.02/356,486.90
  6. Step 6: Final answer
    x = 429,754.35

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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.