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Finding the Fourth Proportional to 301,320.54, 452,056.86 and 139,136.40

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Solution

The fourth proportional to 301,320.54, 452,056.86 and 139,136.40 is: 208,739.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,320.54 : 452,056.86 = 139,136.40 : x
  2. Step 2: Convert to fraction form
    301,320.54/452,056.86 = 139,136.40/x
  3. Step 3: Cross multiply
    301,320.54x = 452,056.86 × 139,136.40
  4. Step 4: Simplify right side
    301,320.54x = 62,897,564,095.70
  5. Step 5: Solve for x
    x = 62,897,564,095.70/301,320.54
  6. Step 6: Final answer
    x = 208,739.72

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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.