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Finding the Fourth Proportional to 315,285.55, 434,980.33 and 242,710.63

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Solution

The fourth proportional to 315,285.55, 434,980.33 and 242,710.63 is: 334,853.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,285.55 : 434,980.33 = 242,710.63 : x
  2. Step 2: Convert to fraction form
    315,285.55/434,980.33 = 242,710.63/x
  3. Step 3: Cross multiply
    315,285.55x = 434,980.33 × 242,710.63
  4. Step 4: Simplify right side
    315,285.55x = 105,574,348,237.68
  5. Step 5: Solve for x
    x = 105,574,348,237.68/315,285.55
  6. Step 6: Final answer
    x = 334,853.12

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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.