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Finding the Fourth Proportional to 190,802.40, 286,203.60 and 172,431.60

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Solution

The fourth proportional to 190,802.40, 286,203.60 and 172,431.60 is: 258,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,802.40 : 286,203.60 = 172,431.60 : x
  2. Step 2: Convert to fraction form
    190,802.40/286,203.60 = 172,431.60/x
  3. Step 3: Cross multiply
    190,802.40x = 286,203.60 × 172,431.60
  4. Step 4: Simplify right side
    190,802.40x = 49,350,544,673.76
  5. Step 5: Solve for x
    x = 49,350,544,673.76/190,802.40
  6. Step 6: Final answer
    x = 258,647.40

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1.5x scale

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.