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Finding the Fourth Proportional to 559,868.40, 839,798.76 and 139,143.60

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Solution

The fourth proportional to 559,868.40, 839,798.76 and 139,143.60 is: 208,714.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,868.40 : 839,798.76 = 139,143.60 : x
  2. Step 2: Convert to fraction form
    559,868.40/839,798.76 = 139,143.60/x
  3. Step 3: Cross multiply
    559,868.40x = 839,798.76 × 139,143.60
  4. Step 4: Simplify right side
    559,868.40x = 116,852,622,741.94
  5. Step 5: Solve for x
    x = 116,852,622,741.94/559,868.40
  6. Step 6: Final answer
    x = 208,714.45

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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.