Home / 459,840.40-689,782.20-144,307.60

Finding the Fourth Proportional to 459,840.40, 689,782.20 and 144,307.60

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Solution

The fourth proportional to 459,840.40, 689,782.20 and 144,307.60 is: 216,468.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,840.40 : 689,782.20 = 144,307.60 : x
  2. Step 2: Convert to fraction form
    459,840.40/689,782.20 = 144,307.60/x
  3. Step 3: Cross multiply
    459,840.40x = 689,782.20 × 144,307.60
  4. Step 4: Simplify right side
    459,840.40x = 99,540,813,804.72
  5. Step 5: Solve for x
    x = 99,540,813,804.72/459,840.40
  6. Step 6: Final answer
    x = 216,468.18

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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.