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Finding the Fourth Proportional to 307,445.40, 424,210.14 and 186,650.28

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Solution

The fourth proportional to 307,445.40, 424,210.14 and 186,650.28 is: 257,538.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,445.40 : 424,210.14 = 186,650.28 : x
  2. Step 2: Convert to fraction form
    307,445.40/424,210.14 = 186,650.28/x
  3. Step 3: Cross multiply
    307,445.40x = 424,210.14 × 186,650.28
  4. Step 4: Simplify right side
    307,445.40x = 79,178,941,409.84
  5. Step 5: Solve for x
    x = 79,178,941,409.84/307,445.40
  6. Step 6: Final answer
    x = 257,538.22

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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.