Home / 310,638.24-426,050.28-306,957.60

Finding the Fourth Proportional to 310,638.24, 426,050.28 and 306,957.60

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Solution

The fourth proportional to 310,638.24, 426,050.28 and 306,957.60 is: 421,002.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,638.24 : 426,050.28 = 306,957.60 : x
  2. Step 2: Convert to fraction form
    310,638.24/426,050.28 = 306,957.60/x
  3. Step 3: Cross multiply
    310,638.24x = 426,050.28 × 306,957.60
  4. Step 4: Simplify right side
    310,638.24x = 130,779,371,428.13
  5. Step 5: Solve for x
    x = 130,779,371,428.13/310,638.24
  6. Step 6: Final answer
    x = 421,002.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.