Home / 459,622.40-689,455.20-144,089.60

Finding the Fourth Proportional to 459,622.40, 689,455.20 and 144,089.60

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Solution

The fourth proportional to 459,622.40, 689,455.20 and 144,089.60 is: 216,141.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,622.40 : 689,455.20 = 144,089.60 : x
  2. Step 2: Convert to fraction form
    459,622.40/689,455.20 = 144,089.60/x
  3. Step 3: Cross multiply
    459,622.40x = 689,455.20 × 144,089.60
  4. Step 4: Simplify right side
    459,622.40x = 99,343,323,985.92
  5. Step 5: Solve for x
    x = 99,343,323,985.92/459,622.40
  6. Step 6: Final answer
    x = 216,141.17

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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.