Home / 287,218,807.20-430,828,210.80-195,385,802.40

Finding the Fourth Proportional to 287,218,807.20, 430,828,210.80 and 195,385,802.40

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Solution

The fourth proportional to 287,218,807.20, 430,828,210.80 and 195,385,802.40 is: 293,078,703.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,218,807.20 : 430,828,210.80 = 195,385,802.40 : x
  2. Step 2: Convert to fraction form
    287,218,807.20/430,828,210.80 = 195,385,802.40/x
  3. Step 3: Cross multiply
    287,218,807.20x = 430,828,210.80 × 195,385,802.40
  4. Step 4: Simplify right side
    287,218,807.20x = 84,177,715,663,714,352
  5. Step 5: Solve for x
    x = 84,177,715,663,714,352/287,218,807.20
  6. Step 6: Final answer
    x = 293,078,703.60

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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.