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Finding the Fourth Proportional to 540,017.81, 745,219.80 and 298,317.18

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Solution

The fourth proportional to 540,017.81, 745,219.80 and 298,317.18 is: 411,675.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,017.81 : 745,219.80 = 298,317.18 : x
  2. Step 2: Convert to fraction form
    540,017.81/745,219.80 = 298,317.18/x
  3. Step 3: Cross multiply
    540,017.81x = 745,219.80 × 298,317.18
  4. Step 4: Simplify right side
    540,017.81x = 222,311,869,216.16
  5. Step 5: Solve for x
    x = 222,311,869,216.16/540,017.81
  6. Step 6: Final answer
    x = 411,675.07

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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.