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Finding the Fourth Proportional to 553,928.18, 830,763.63 and 216,975.86

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Solution

The fourth proportional to 553,928.18, 830,763.63 and 216,975.86 is: 325,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,928.18 : 830,763.63 = 216,975.86 : x
  2. Step 2: Convert to fraction form
    553,928.18/830,763.63 = 216,975.86/x
  3. Step 3: Cross multiply
    553,928.18x = 830,763.63 × 216,975.86
  4. Step 4: Simplify right side
    553,928.18x = 180,255,653,075.97
  5. Step 5: Solve for x
    x = 180,255,653,075.97/553,928.18
  6. Step 6: Final answer
    x = 325,413.40

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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.