Home / 371,579.18-512,762.13-210,435.40

Finding the Fourth Proportional to 371,579.18, 512,762.13 and 210,435.40

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Solution

The fourth proportional to 371,579.18, 512,762.13 and 210,435.40 is: 290,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,579.18 : 512,762.13 = 210,435.40 : x
  2. Step 2: Convert to fraction form
    371,579.18/512,762.13 = 210,435.40/x
  3. Step 3: Cross multiply
    371,579.18x = 512,762.13 × 210,435.40
  4. Step 4: Simplify right side
    371,579.18x = 107,903,303,931.40
  5. Step 5: Solve for x
    x = 107,903,303,931.40/371,579.18
  6. Step 6: Final answer
    x = 290,391.15

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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.