Home / 287,916.15-397,346.81-158,880.23

Finding the Fourth Proportional to 287,916.15, 397,346.81 and 158,880.23

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Solution

The fourth proportional to 287,916.15, 397,346.81 and 158,880.23 is: 219,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,916.15 : 397,346.81 = 158,880.23 : x
  2. Step 2: Convert to fraction form
    287,916.15/397,346.81 = 158,880.23/x
  3. Step 3: Cross multiply
    287,916.15x = 397,346.81 × 158,880.23
  4. Step 4: Simplify right side
    287,916.15x = 63,130,552,562.57
  5. Step 5: Solve for x
    x = 63,130,552,562.57/287,916.15
  6. Step 6: Final answer
    x = 219,267.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.