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Finding the Fourth Proportional to 249,411.20, 374,116.80 and 165,430.40

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Solution

The fourth proportional to 249,411.20, 374,116.80 and 165,430.40 is: 248,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,411.20 : 374,116.80 = 165,430.40 : x
  2. Step 2: Convert to fraction form
    249,411.20/374,116.80 = 165,430.40/x
  3. Step 3: Cross multiply
    249,411.20x = 374,116.80 × 165,430.40
  4. Step 4: Simplify right side
    249,411.20x = 61,890,291,870.72
  5. Step 5: Solve for x
    x = 61,890,291,870.72/249,411.20
  6. Step 6: Final answer
    x = 248,145.60

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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.